{"id":"CVE-2023-37928","published":"2023-11-30T01:37:27Z","modified":"2025-02-13T17:01:40Z","title":"A post-authentication command injection vulnerability in the WSGI server of the Zyxel NAS326 firmware version…","vendor":"Zyxel","product":"NAS326 firmware","tier":"core","eol":null,"affectedVersions":[{"vendor":"Zyxel","product":"NAS326 firmware","versions":["V5.21(AAZF.14)C0"]},{"vendor":"Zyxel","product":"NAS542 firmware","versions":["V5.21(ABAG.11)C0"]}],"description":{"text":"A post-authentication command injection vulnerability in the WSGI server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an authenticated attacker to execute some operating system (OS) commands by sending a crafted URL to a vulnerable device.","provenance":"source","from":"CVE.org"},"summary":{"text":"A post-authentication OS command injection flaw exists in the WSGI server of Zyxel NAS326 firmware (V5.21(AAZF.14)C0) and NAS542 firmware (V5.21(ABAG.11)C0). An authenticated attacker with network access to the device can execute some operating system commands by sending a crafted URL, with no user interaction required.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:15:25Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.602,"percentile":0.99134,"date":"2026-10-29","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":0,"pulses":[],"provenance":"machine"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products","tags":["vendor-advisory"]},{"url":"https://bugprove.com/knowledge-hub/cve-2023-37927-and-cve-2023-37928-multiple-post-auth-blind-os-command-and-python-code-injection-vulnerabilities-in-zyxel-s-nas-326-devices/","tags":[]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2023-41781","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-41781","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2023-11-30","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2023-37928","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":26.0,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.83,"detail":"percentile 0.9913"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}